Air-filter for gas-engines



F. BELLVILLE AND E. A.. BELLEVILLE. AIR FILTER FOR GAS ENGINES. APPLICATION FILED IuNI: 29. 1920.

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' Patented oen 26,1920.

:UNITED-STATES PATENT OFFICE.

FRANK BELLVILLE AND EDWIN' BELLEVILLE, O F TWIN FALLS, IDAHO.

A1B-FILTER FOR GAS-ENGINES.

' application mea :une 2s,

To all lwhom it may concern:

Be it known that we, FRANK BELLVILLE and EDWIN A. BELLEVILLE, citizens of the United States, residing at Twin Falls, 1n the county of Twin Falls and State of Idaho, have yinventedfcertain new anduseful Improvements in Air-Filters for Gas- Engines, of which the following is a speelfication, reference being had therein to the accompanying drawing. y

It is important that air for mixing with gasoline in the carbureter of gas englnes shall be freed from dust orfine grit, and especially is this the case in our western country where alkali dust is so abundant. Such dust 'or grit injures carbureters and finding its way into the engine, damages the cylinders and pistons causing enormous losses. Frequent reboring of the cylinders and replacement of the pistons becomes necessary, and the injury may be so serious as to necessitate wholly discarding the engine. Damage and loss from this cause are especially the case in farm tractors used 1n plowing because of the great quantity of the dust they stir up. The object of, our

- invention is the provision of an air filterlng, or washing device of such construction that it will eiiiciently remove dust from a1r drawn into the gas engine, have a mlnlmum of parts, so that it will be inexpensive to make and not get out of order, permit ready access to its interior parts for such cleamng as may be necessary or for other purposes, and yet be air-tight when its parts are assembled and in working condition, and having means to supply the water that is required in its use. so that frequent replenishing thereofe will not be necessary, and to this end our invention consists in the filter constructed substantially as hereinafter specified and claimed.

In the annexed drawings:

Figure 1 is a vertical side of a filter emodying our invention;

Fig. 2 is a horizontal 2 2, of Fig. 1.

In the apparatus shown in the drawings as one form or embodiment of our invention, we employ a cylindrical cup" like shell or container 10, with a fixed bottom 11, and a removable cover 12 in the form of an inverted cup, whose sides telescope over the sides of the shell 10 at the top and form an air-tight joint therewith. At the center of the cover is a vertical pipe 13, that opens section on the line Specification of Letters Patent.

Patented Oct. 26, 1920. 1920. serial No. 392,695.

into the cover and is the air intake, by which the air is led into the container 10 at its upper end, and a daring orv conical skirt 14 surrounds the portion of the pipe adjacent to the cover, and being attached at its small end to the pipe and at its large end to the cover, forms a brace or support and provides a goodlfinish at that end of the apparatus.

Within the shell or container 10, and concentric therewith, is a vertical pi e 15 that extends from the upper part o the container (but without reaching. the top thereof) through the bottom 11, and below the latter and leads to the carbureter (not shown) `and whichv serves to deliver the air, after its treatment in the apparatus, to the carbureter. Surrounding the portion of the pipe'l belowlthe bottom 11 and attached thereto and to the bottom is a flaring or conical skirt 16 which braces or supports the pipe, and as there are'holes 17 in said bottom 11, constitutes a prolongation or extension of the container 10.

Within the container 10 and reaching from the upper part to the bottom thereof is a cylindrical shell 18 that is concentric with and and at intervals there are vertically extend-l ing ribs 19 on the periphery of said shell 18 that reach to the interior wall of the container 10 which serve as separators and subdivide the annular space between container and shell into a series of vertical passages 20 that reach from the closed top or head 21 4of said shell to the bottom thereof and provide passages for the downward fiow of air from the space above the head 21 to the lower part of the container from which passa s the air Hows to the interior of the shell 20 through numerous holes 22 in the wall near the bottom thereof. AThe lower portion of the shell 20 is submerged in a body of water so that the descending air before reaching the perforations 22 passes downward through such water and then upward through the same within the shell. Emerging from the water, the air will flow upward through the container, in the ample space between the shell and the central pipe 15, and, after passing in succession through a horizontal screen 23 of coarse mesh, and a second horizontal screen 24 of finer mesh, and a filtering body such as a sponge 25 lying upon the second screen 24, will enter the upper end of the veduction pipe 15, and will pass down tlrough spaced from the container wall i container,

the pipe and on to the carbureter, and be delivered to the latter wholly freed from dust e1' grit with which it wee laden er Charged et the time of entering the container 10 at the top. The water in the lower part of the besides serving to interceptl dust Passing into it with the air, provides enough moisture that is carried along with the air to keep the sponge in a moisture-accumulatin condition, and swelled to the desired vo ume to intercept the air in the upper part of the container.

Secured to the side of the container l() is a water storage reservoir 26 with a removable cover 2T, and from the bottom of which a pipe 28 extends that passes upward into the lower part of the shell 2O and at the level to which it is desired the Water in the shell shall extend, it has a valve 29 controlled by a Heat 30 within the float chamber formed by a vertical curb 3l substantially midway between the pipe l5 and the shell 20 and which has holes 32 through which water flows into the space around such curb. It Will thus be seen that a large 'quantity of Water may be ke t in reserve and Wheh ie eutemateelly Supplied te the. Container te maintain the desired quantity of Water therein.

What we claim is: l Apparatus ef the kind deeeribed eemprising' a container, an air inlet at one end, i

a shell having a'head spaced from the air entering end ef the eenteiner and Speeed from the inside of the container, ribs formed upon one ofthe same and extending between said head and the opposite end of the 'container and situated in the space between the lshell and the container wall, suoli space being in communication with the interior of the shell, filtering means within the shell, and an air pipe in the shell reachingv from the end thereof near its head to and through the opposite end of the container.

2. Apparatus of the kind described comprisinfr' a container, an air inlet at one end, a shell having a head spaced from the air entering en d of the container and spaced from the inside of the 'co tainer, ribs formed on the shell extending etween said head and the opposite end of the container and situated in the space between the shell and l the container w( such space being in communication with the interior of the shell, filteriner means within the shell, and anair pipe within the shell extending from the end thereef meer its heed te end tbreugh the 0P- neete engi ef the eentei er.- lntestimony Whereo we hereunto aix our signatures.

FR NK BELLVI LE.

ED N BEL EV'ILLE. 

